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Clean-up of triazines in vegetable extracts by molecularly-imprinted solid-phase extraction using a propazine-imprinted polymer

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dc.contributor.author Cacho, C.
dc.contributor.author Turiel, E.
dc.contributor.author Martín Esteban, A.
dc.contributor.author Pérez-Conde, C.
dc.contributor.author Cámara, Carmen
dc.date.accessioned 2016-08-25T09:59:23Z
dc.date.available 2016-08-25T09:59:23Z
dc.date.issued 2003
dc.identifier.citation Cacho, C., Turiel, E., Martín-Esteban, A., Pérez-Conde, C., & Cámara, C. (2003). Clean-up of triazines in vegetable extracts by molecularly-imprinted solid-phase extraction using a propazine-imprinted polymer. Analytical and Bioanalytical Chemistry, 376(4), 491-496. spa
dc.identifier.issn 16182642
dc.identifier.uri http://hdl.handle.net/11268/5682
dc.description.abstract An analytical methodology based on a molecularly imprinted solid-phase extraction (MISPE) procedure was developed for the determination of several triazines (atrazine, simazine, desethylatrazine (DEA), desisopropylatrazine (DIA), and propazine) in vegetable samples. A methacrylic acid-based imprinted polymer was prepared by precipitation polymerisation using propazine as template and toluene as porogen. After removal of the template by Soxhlet extraction, the optimum loading, washing, and elution conditions for MISPE of the selected triazines were established. The optimised MISPE procedure was applied to the extraction of the selected triazines in pea, potato, and corn sample extracts and a high degree of clean-up was obtained. However, some remaining interferences, non-specifically and strongly bound to the polymeric matrix, appeared in the chromatogram, preventing quantification of DIA in potatoes and DIA, DEA, and propazine in corn samples. Thus, a new clean-up protocol based on the use of a non-imprinted polymer for removal of these interferences prior to the MISPE step was developed. By following the new two-step MISPE procedure, the matrix compounds were almost completely removed, allowing the determination of all the triazines selected at concentration levels below the established maximum residue limits, making the developed procedure suitable for monitoring these analytes in vegetable samples. spa
dc.description.sponsorship SIN FINANCIACIÓN spa
dc.language.iso eng spa
dc.title Clean-up of triazines in vegetable extracts by molecularly-imprinted solid-phase extraction using a propazine-imprinted polymer spa
dc.type article spa
dc.description.impact 1.715 JCR (2003) Q2, 27/67 Chemistry, analytical; Q3, 30/51 Biochemical research methods spa
dc.identifier.doi 10.1007/s00216-003-1915-0
dc.rights.accessRights closedAccess spa
dc.subject.uem Química analítica spa
dc.subject.uem Control de calidad spa
dc.subject.unesco Bioquímica spa
dc.subject.unesco Control de alimentos spa
dc.description.filiation UEM spa
dc.relation.publisherversion http://0-doi.org.busca.uem.es/10.1007/s00216-003-1915 -0 spa
dc.peerreviewed Si spa


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